Bell-ringer for locomotives.



N0. 629,662. Patented luly 25, |899.

' E. M. CRANDALL.

BELL RINGER FOB LOCOMOTIVES.

(Application led Mat. 24, 1899.)

(No 'ModelJ INVEN-TOR 6 7715 /Tl'llazl,

(U. @Mm

ATTORNEY.

l UNITED STATESv PATENT OFFICE.

EMMET M. ORANDALIQ, OF ST. JOSEPH, MISSOURI.

BELL-RINGER FOR LoooMoTIvEs.

SPECIFICATION forming part of Letters Patent No. 629,662, dated July 25, 1899. Application filed March 24, 1899. Serial No. 710,348. (No model.) Y i To @ZZ whom it 77ml/ 3o/werft:

Be it known that I, EMMET M. CRAND'ALL, a citizen of the United States, and a resident of St. Joseph, in the county of Buchanan and State of Missouri, have invented certain new and useful Improvements in Bell-Ringers for Locomotives, dac.; and I do declare the following to ber a full, clear, and exact description of theinventiornsuch as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters ot' reference marked thereon,`which form a part of this specification.-

Figure l of the drawings is a representation of a side View partly showingA the invention as in application. Figs. 2 and 3 are sectional views showing the piston in its extreme positions. Fig. 4. is an enlarged section on line Fig. 2. Fig. 'is an enlarged section on the line y y of Fig. 3. Fig. 6 is a detail View of the means for securing the cylinder to the bell-frame.

This invention isdesigned to provide an improved bell-ringer which can be started at any time without pulling the bell-rope, while at the same time it permits the bell to be rung by means of said rope without disconnection from the ringer; also, to provide a device of this character which is simple in construction, inexpensive, and durable, which can be operated with but little air or steam, and which can be readily attachednto any engine.

With these objects in View the invention consists in the novel construction and combination of parts, all as hereinafterdescribed,l and pointed out in the appendedclaim.

Referring to the accompanying drawings, the letter A indicates the usual bell-frame, B a bell hung therein, and() the bell-crank.

D designates a cylinder having at one side a lug or projection D', formed with a transversely-extendin g dovetailed groove Dwhich is engaged by the dovetailed ribs E' of a pair of clamps E, the whole being secured by a bolt E2 and nut Ei. The. cylinder D is provided at F with a nipple F for connection with an air or steam inlet pipe, (not shown,)

and leading from said nipple to the interior of the cylinder is an inlet-portG. G designates an exhaust-port at the opposite side`of said cylinder. The cylinder is secured to the the' clamps E. Other suitable means for supporting 'or securing said cylinder may, however, be provided. Said cylinder is closed at the bottom fand, open at the top, and fitted to reciprocate verticallytherein is a cylindrie piston H. Said piston has in its lower portion a central vertical cavity h, open. at the bottom, and communicating with this cavityT y upright portion of the bell-frame by means of are an inleteport 7c and au exhaust-.port k7.

These two ports, which are designed to register, respectively, with the ports G G' of the cylinder, are at an vangle to each other, as shown in Fig. 3, so that when the ports la and Y Gr are in registering positions ports 7s' and G will be in non-registering positions, and vice versa, the change being effected by a partial rotation of the pistonl as it reciprocates. To effect this rotary movement, I form in one side of the piston an oblique cam-groove K, which is engaged by a stud K', seated in the wall of the cylinder. The outer portionsof the ports k 7d at the surface of the cylinder are enlarged or formed into chambers 7a2 and k3, respectively, so as to take steam while the piston is moving. Formed inthe upper end portion of said piston is a ball seat or socket L, in which is Yseated a ball M on the lower end of a rod N. Adjustably secured on said rod is a sleeve O, having a lug P, which is connected to the bell-crank C, as shown in Fig. l.

The operation will be readilyunderstood. Air or steam being admitted to the piston, the

latter is raised by the pressure,being partially rotated at the same time (the ball and socket permitting this) by reason of the engagement of the stud K with its groove K, thereby closing the inlet-port and opening the exhaustport. The piston is returned by its own weight and the weight of the bell.

Byreason of the ball-and-socket connection between the rod N and the piston and the angular position of said rod when the bell is at rest the device can be started without pulling the bell-rope and the bell maybe rung by means of the rope without disconnecting it from the operating devices.

The piston is suitably packed at Z. The entire device, with the exception of the rod N and ball M, may be made of cast-iron. The

roc

munioating With said cavity, and at an angle' to each other, and also having an oblique 4 groove in its surface and a ball-seat in its upper end portion, a stud seated in the cylinder-Wall and engaging the said groove,V and a rod adapted for connection with a be1l-erank and having,1 a bali at one end portion which 15 engages the hall-seat in the piston, substantially as specified. n

In testimony whereof I aiix my signature I in presence of two Witnesses.

EMMET M. CRADALL.

Witnesses:

HERMAN A. SUTER, JOHN V. DENNY. 

